iOS 8, OS X Yosemite Topped Software-Focused WWDC 2014 Intros

As for the second part of the iOS story—and here Cook shared that the App Store now holds 1.2 million apps, 300 million people visit the app store every week, and 75 billion apps have been downloaded—Apple has done more to make apps easier to find and more compelling to buy.
— There are Explore tabs that break down content by category and subcategory, and searching based on what's trending.
— Bundles let users buy multiple apps from the same developer at a discounted price. Developers can also include short video features about their apps.
— TestFlight allows developers to invite users to test their apps for free.

— Extensibility enables apps to team up and work together. A photo taken with the iPhone camera, for example, can access filters made available in a photo app, and then be pinned to a user's Pinterest board. Widgets for apps can also be dragged into the Notifications Center. Federighi showed how an eBay widget could allow him to see that he'd been outbid for an eBay item and so increase his bid without leaving Notification Center.

— Metal, a processor improvement that opens up a new world for developers, delivers a tenfold increase in rendering efficiency.
— SpriteKit, for creating casual games, now includes support for light sources, field forces and per-pixel physics, among other features, and SceneKit offers 3D scene rendering for casual game building.
— Swift is a new, simplified coding language.
— And HomeKit is a toolkit for your home. With a command like "get ready for bed," said Federighi, you can make sure the garage door is down, the security system is activated and the lights are dimmed.
Cook, offering final remarks—and speaking slowly and steadily, seeming like a solid tortoise figure to the quicker Federighi (the hare with the hair?), said that OS 10 Yosemite and iOS 8 exemplify that Apple is a company that makes "devices and services that all work together in harmony."
We do this, Cook added, "so we can create a seamless experience for users that is unparalleled in the industry. This is something that only Apple can do."
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